Battery system

Abstract

The utility model discloses a battery system. The battery system comprises a box cover, a box body and a battery module, the surface of the box cover is sunken to form a first sunken part, and the first sunken part is used for containing an external hoisting structure. The box body is connected with the box cover, a mounting cavity is defined by the box body and the box cover, and a hoisting assembly is arranged on the outer side wall of the box body and used for mounting an external hoisting structure. A plurality of layers of battery modules are arranged, and the plurality of layers of battery modules are arranged in the mounting cavity. According to the battery system, the occupied space of an external hoisting structure is reduced, and the logistics cost and the site occupation cost are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of battery equipment, especially to a battery system. BACKGROUND

[0002] In the development process of energy storage and application, the battery system plays a very key role, especially in the field of electric vehicles, large-scale energy storage facilities and the like, the capacity requirement of the battery system is increasingly climbing. In order to meet the high-capacity demand, it is usually necessary to set multiple layers of battery modules in the battery system.

[0003] With the increase of the number of layers of the battery module, the volume of the battery system also significantly increases, and when the external hoisting structure is connected with the battery system, the external hoisting structure is protruded on the surface of the battery system, so that the external hoisting structure also occupies a large space, resulting in that the battery system needs to occupy a large space in aspects of temporary storage in a production workshop, loading of a transport vehicle, placement in an installation site and the like, thereby increasing logistics cost and site occupation cost. SUMMARY

[0004] The main purpose of the utility model is to provide a battery system, which aims to solve the technical problem of large volume of the battery system of the multiple layers of battery modules in the related art, and increase logistics cost and site occupation cost.

[0005] In order to achieve the above-mentioned utility model purpose, the utility model provides a battery system.

[0006] A battery system comprises:

[0007] A box cover, a surface of the box cover is recessed to form a first recessed part, and the first recessed part is used for accommodating an external hoisting structure;

[0008] A box body connected with the box cover, and the box body and the box cover enclose an installation cavity, an outer side wall of the box body is provided with a hoisting assembly, and the hoisting assembly is used for installing the external hoisting structure; and

[0009] A battery module, the battery module is provided with multiple layers, and the multiple layers of battery modules are arranged in the installation cavity.

[0010] In one of the embodiments, the hoisting assembly comprises a first hoisting piece and a second hoisting piece, the first hoisting piece and the second hoisting piece are respectively arranged on opposite sides of the box body, and the first recessed part is located between the first hoisting piece and the second hoisting piece.

[0011] In one of the embodiments, a plurality of first hoisting holes are formed on the first hoisting piece, the first hoisting holes are provided for the external hoisting structure to pass through, and the plurality of first hoisting holes are arranged along the length direction of the first hoisting piece; and / or

[0012] The second lifting member is provided with a plurality of second lifting holes, the second lifting holes are provided for the external lifting mechanism to pass through, and the plurality of second lifting holes are arranged at intervals along the length direction of the second lifting member.

[0013] In one of the embodiments, the box cover is provided with a second recess, the second recess is arranged opposite to the first recess, and the second recess is used for accommodating the external lifting structure.

[0014] In one of the embodiments, the box cover is detachably connected with the box body.

[0015] In one of the embodiments, the battery system further comprises a fastener, an edge of the box cover is outwardly extended and provided with a folded edge structure, the folded edge structure is provided with a first mounting hole, the box body is provided with a second mounting hole matched with the first mounting hole, and the fastener is arranged in the first mounting hole and the second mounting hole.

[0016] In one of the embodiments, the plurality of battery modules comprises a first module, a second module, a third module and a fourth module, the first module, the second module, the third module and the fourth module are arranged in the mounting cavity in a vertical direction, the first module is arranged at the top of the box cover, and the fourth module is arranged at the bottom of the box body.

[0017] In one of the embodiments, the inner side wall of the box cover forms a plurality of accommodation spaces, the first module is provided in plurality, the plurality of first modules are arranged in a horizontal direction, and the plurality of first modules are correspondingly accommodated in the plurality of accommodation spaces.

[0018] In one of the embodiments, the second module is provided in plurality, the plurality of second modules are arranged in a horizontal direction, and the plurality of second modules are correspondingly accommodated in the plurality of accommodation spaces.

[0019] In one of the embodiments, the battery system further comprises an electrical connector, the electrical connector is used for electrically connecting the plurality of battery modules.

[0020] Advantageous effects:

[0021] The battery system of the utility model discloses a box cover, a box body and a battery module. The surface of the box cover is recessed to form a first recessed part, and the first recessed part is used for accommodating an external hoisting structure. The box body is connected with the box cover, and the box body and the box cover enclose an installation cavity. The outer side wall of the box body is provided with a hoisting assembly, and the hoisting assembly is used for mounting the external hoisting structure. The battery module is provided with multiple layers, and the multiple layers of battery modules are arranged in the installation cavity. The first recessed part can accommodate the external hoisting structure, so that part of the external hoisting structure can be hidden in the first recessed part, thereby reducing the occupied space of the external hoisting structure and reducing the logistics cost and site occupation cost. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is the structure schematic diagram of the battery system of an embodiment of the utility model.

[0023] Figure 2 It is the structure schematic diagram of the battery module of an embodiment of the utility model.

[0024] Figure 3 It is the partial structure diagram of the battery system of an embodiment of the utility model.

[0025] Figure 4 It is Figure 1 The enlarged view of A in the figure.

[0026] Among them:

[0027] 100, box cover; 110, first recessed part; 120, second recessed part; 130, folding edge structure; 131, first mounting hole;

[0028] 200, box body; 210, second mounting hole;

[0029] 300, battery module; 310, first module; 320, second module; 330, third module; 340, fourth module;

[0030] 400, hoisting assembly; 410, first hoisting piece; 411, first hoisting hole; 420, second hoisting piece; 421, second hoisting hole;

[0031] 500, electric connecting piece.

[0032] The realization, functional characteristics and advantages of the utility model will be further explained by combining with the embodiments and referring to the drawings. DETAILED DESCRIPTION

[0033] It should be understood that the specific embodiments described herein are only used to explain the utility model, and are not used to limit the utility model.

[0034] In the description of the utility model, it is necessary to understand that the orientation or positional relation indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like is the orientation or positional relation based on the orientation or positional relation shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "multiple" is two or more than two, unless otherwise specifically limited.

[0035] In the description of the utility model, it should be explained that, unless otherwise specifically defined and limited, the terms "mounting", "connection" and "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected, it can be mechanical connection, it can be directly connected, or indirectly connected through intermediate medium, it can be the communication between two elements or the interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0036] In the utility model, unless otherwise specifically defined and limited, the "upper" or "lower" of the first feature to the second feature can include that the first and second features are in direct contact, or the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the "upper", "upper" and "upper" of the first feature to the second feature include that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The "below", "below" and "below" of the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0037] As Figures 1 to 4As shown, in some embodiments, a battery system applied to a heavy truck is provided. The battery system comprises a box cover 100, a box body 200 and a battery module 300. The surface of the box cover 100 is recessed to form a first recessed part 110, which is used to accommodate an external hoisting structure. The box body 200 is connected with the box cover 100, and the box body 200 and the box cover 100 enclose an installation cavity. The outer side wall of the box body 200 is provided with a hoisting assembly 400, which is used to install the external hoisting structure. The battery module 300 is provided with multiple layers, and the multi-layer battery module 300 is arranged in the installation cavity.

[0038] The first recessed part 110 can accommodate the external hoisting structure, so that part of the external hoisting structure can be hidden in the first recessed part 110, thereby reducing the occupied space of the external hoisting structure and reducing the logistics cost and site occupation cost. The battery system of the heavy truck needs to have a large capacity of power storage, and the multi-layer battery module 300 is arranged in the installation cavity, which can fully utilize the vertical space enclosed by the box body 200 and the box cover 100. By reasonably stacking the battery module 300, the number of battery modules 300 is maximized on the basis of limited floor area, thereby improving the energy storage density of the entire battery system and achieving the purpose of storing more power in a smaller space.

[0039] In some embodiments, the box cover 100 is provided with a second recessed part 120, which is arranged opposite to the first recessed part 110 and is used to accommodate the external hoisting structure.

[0040] Specifically, the second recessed part 120 is arranged opposite to the first recessed part 110. The first recessed part 110 and the second recessed part 120 are arranged opposite to each other to form a double positioning mechanism. When the external hoisting structure is embedded in the first recessed part 110 and the second recessed part 120, the position of the external hoisting structure can be accurately defined in the relative position of the box cover 100, reducing the relative displacement between the external hoisting structure and the box cover 100 during hoisting, and improving the hoisting accuracy of the battery system. The first recessed part 110 and the second recessed part 120 can also serve as a vehicle frame avoidance function to avoid interference between the box body 200 and the vehicle frame.

[0041] In some embodiments, the hoisting assembly 400 comprises a first hoisting part 410 and a second hoisting part 420, which are respectively arranged on opposite sides of the box body 200, and the first recessed part 110 is located between the first hoisting part 410 and the second hoisting part 420. Specifically, the second recessed part 120 is located between the first hoisting part 410 and the second hoisting part 420.

[0042] It should be noted that, since the first hoisting member 410 and the second hoisting member 420 are located on opposite sides of the box body 200, when the external hoisting structure is connected with the first hoisting member 410 and the second hoisting member 420 and hoists up the battery system, the force balance can be achieved in the horizontal direction, and the swing of the battery system in the horizontal direction can be prevented.

[0043] The first recessed part 110 is located between the first hoisting member 410 and the second hoisting member 420, and the external hoisting structure is embedded in the recessed part, while the external hoisting structure cooperates with the first hoisting member 410 and the second hoisting member 420 on the two sides of the box body 200. The force of the box cover 100 part is transmitted to the hoisting members on the two sides of the box body 200, so that the force of the entire battery system in the vertical direction can also be uniformly distributed. This cooperative balancing mode can ensure that the force of the battery system in each direction is more uniform, and avoid local excessive force leading to structural damage.

[0044] Specifically, the first hoisting member 410 and the second hoisting member 420 can each be a plate-shaped structure. When the plate-shaped first hoisting member 410 and the second hoisting member 420 are connected with the external hoisting structure and bear the weight of the battery system, since they have a large planar area, the force can be dispersed on the entire plate surface. Compared with some hoisting members with smaller contact area, the plate-shaped first hoisting member 410 and the second hoisting member 420 can more evenly distribute the weight and lifting force from the battery system to the connection parts with the external hoisting structure.

[0045] In some embodiments, a plurality of first hoisting holes 411 are formed on the first hoisting member 410, the first hoisting holes 411 are provided for the external hoisting structure to pass through, and the plurality of first hoisting holes 411 are arranged along the length direction of the first hoisting member 410.

[0046] When the external hoisting structure passes through the first hoisting holes 411 to hoist up the battery system, since a plurality of first hoisting holes 411 are provided, the weight of the battery system will be dispersed to the connection points corresponding to these first hoisting holes 411. This multi-point dispersion mode can avoid the force being concentrated on one part, so that the force borne by each first hoisting hole 411 is relatively small. Arranging the first hoisting holes 411 along the length direction can make the force more evenly distributed in the length direction of the first hoisting member 410, preventing the local area of the first hoisting member 410 from being damaged due to excessive force.

[0047] Specifically, the plurality of first hoisting holes 411 are equidistantly arranged along the length direction of the first hoisting member 410. The equidistantly arranged first hoisting holes 411 can ensure that the force is more evenly dispersed in the length direction of the first hoisting member 410 during hoisting. When the external hoisting structure hoists the battery system through the first hoisting holes 411, since the distance between each first hoisting hole 411 is equal, the force is distributed on the first hoisting member 410 at equal intervals, avoiding the situation that the local force of the first hoisting member 410 is too large or too small due to uneven distribution of the first hoisting holes 411, so that the first hoisting member 410 can better bear the weight and lifting force of the battery system.

[0048] In some embodiments, the second hoisting member 420 is provided with a plurality of second hoisting holes 421 for the external hoisting mechanism to pass through, and the plurality of second hoisting holes 421 are arranged at intervals along the length direction of the second hoisting member 420. Specifically, the plurality of second hoisting holes 421 are arranged at intervals along the length direction of the second hoisting member 420. The first hoisting hole 411 and the first hoisting hole 411 have the same effect, which will not be described here.

[0049] In some embodiments, the box cover 100 and the box body 200 are detachably connected. The detachable connection mode can be bolt connection, buckle connection or clamping groove connection, etc. In this way, the box cover 100 and the box body 200 are convenient to install and disassemble. When it is necessary to maintain, overhaul or replace the battery module 300 inside the battery system, the box cover 100 can be easily disassembled.

[0050] Specifically, a sealing gasket or a sealing rubber strip or the like sealing member is arranged at the connection between the box cover 100 and the box body 200. When the box cover 100 and the box body 200 are connected, the sealing member is compressed, thereby filling the small gap at the connection part and preventing foreign matters such as dust and moisture from the outside from entering the inside of the box body 200, protecting the battery module 300 from pollution and corrosion.

[0051] Specifically, the battery system further comprises a fastener, the edge of the box cover 100 is provided with a folded edge structure 130 extending outward, the folded edge structure 130 is provided with a first mounting hole 131, the box body 200 is provided with a second mounting hole 210 matched with the first mounting hole 131, and the fastener is arranged in the first mounting hole 131 and the second mounting hole 210.

[0052] It should be noted that the edge of the box cover 100 extends outward to form a folding structure 130, which can enhance the connection stability and sealing between the box cover 100 and the box body 200. The first mounting hole 131 is arranged on the folding structure 130, and the second mounting hole 210 matched with the first mounting hole 131 is arranged on the box body 200. The fastener (such as bolt, screw, etc.) can pass through the first mounting hole 131 and the second mounting hole 210 to connect the box cover 100 and the box body 200 together. The connection mode constitutes a detachable connection structure between the box cover 100 and the box body 200 of the battery system.

[0053] When the fastener passes through the first mounting hole 131 and the second mounting hole 210 and is tightened, a fastening force is generated between the box cover 100 and the box body 200. The fastening force can effectively connect the box cover 100 and the box body 200 as a whole. When the battery system is subjected to external force, the force is transmitted between the box cover 100 and the box body 200 through the fastener. Due to the existence of the plurality of first mounting holes 131 and the second mounting holes 210, the force can be dispersed to each connection point, avoiding the case that local force is too large to cause connection failure.

[0054] In some embodiments, the plurality of battery modules 300 includes a first module 310, a second module 320, a third module 330, and a fourth module 340, which are arranged in a vertical direction in the mounting cavity. The first module 310 is arranged at the top of the box cover 100, and the fourth module 340 is arranged at the bottom of the box body 200.

[0055] It should be noted that the battery module 300 can be a regular shape such as a cuboid, and the mounting cavity of the box body 200 can also be a cuboid space. The vertical stacking mode is highly matched with the shape of the box body 200. The battery modules 300 can be closely fitted, reducing space waste and ensuring the compactness of the entire battery system structure.

[0056] In some embodiments, the inner side wall of the box cover 100 forms a plurality of accommodation spaces, and the first module 310 is provided in plurality. The plurality of first modules 310 are arranged in a horizontal direction, and the plurality of first modules 310 are correspondingly accommodated in the plurality of accommodation spaces.

[0057] Specifically, the second module 320 is provided in plurality. The plurality of second modules 320 are arranged in a horizontal direction, and the plurality of second modules 320 are correspondingly accommodated in the plurality of accommodation spaces. That is, the first module 310 and the second module 320 located at the top can be accommodated in the accommodation space formed by the inner side wall of the box cover 100.

[0058] In some embodiments, the battery system further comprises an electrical connector 500 for electrically connecting the plurality of battery modules 300. The plurality of battery cells in the battery module 300 are electrically connected in series or in parallel through the electrical connector 500. Specifically, the electrical connector 500 is electrically connected with the tabs of the battery cells. The electrical connector 500 can be a copper bar. The copper bar is an electrically conductive component made of copper material, which has good electrical conductivity, high current carrying capacity and good mechanical strength, and its shape is usually a flat strip, which is convenient for connection layout between the battery modules 300.

[0059] The above merely describes the preferred embodiments of the present application, and is not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation, or direct or indirect application in other related technical fields, based on the content of the present application specification and drawings, are also included in the patent protection scope of the present application.

Claims

1. A battery system characterized by, The battery system comprises: a box cover, a surface of the box cover is recessed to form a first recessed part, the first recessed part is used for accommodating an external hoisting structure; a box body connected with the box cover, the box body and the box cover enclosing an installation cavity, an outer side wall of the box body is provided with a hoisting assembly used for installing the external hoisting structure; and a battery module provided with multiple layers, the multiple layers of the battery module are arranged in the installation cavity.

2. The battery system of claim 1, wherein, The hoisting assembly comprises a first hoisting piece and a second hoisting piece, the first hoisting piece and the second hoisting piece are respectively arranged on opposite sides of the box body, and the first recessed part is located between the first hoisting piece and the second hoisting piece.

3. The battery system of claim 2, wherein, A plurality of first hoisting holes are formed on the first hoisting piece, the first hoisting holes are provided for the external hoisting structure to pass through, and a plurality of the first hoisting holes are arranged along the length direction of the first hoisting piece; and / or The second hoisting piece is provided with a plurality of second hoisting holes, the second hoisting holes are provided for the external hoisting structure to pass through, and a plurality of the second hoisting holes are arranged along the length direction of the second hoisting piece.

4. The battery system of claim 1, wherein, The box cover is provided with a second recessed part, the second recessed part is arranged opposite to the first recessed part, and the second recessed part is used for accommodating the external hoisting structure.

5. The battery system of claim 1, wherein, The box cover and the box body are detachably connected.

6. The battery system of claim 5, wherein, The battery system further comprises a fastener, an edge of the box cover is outwardly extended to be provided with a folded edge structure, the folded edge structure is provided with a first mounting hole, the box body is provided with a second mounting hole matched with the first mounting hole, and the fastener is arranged in the first mounting hole and the second mounting hole.

7. The battery system of claim 1, wherein, The plurality of battery modules comprises a first module, a second module, a third module and a fourth module, the first module, the second module, the third module and the fourth module are arranged in a vertical direction in the installation cavity, the first module is arranged on the top of the box cover, and the fourth module is arranged on the bottom of the box body.

8. The battery system of claim 7, wherein, An inner side wall of the box cover forms a plurality of accommodation spaces, the first module is provided with a plurality of first modules, a plurality of the first modules are arranged in a horizontal direction, and a plurality of the first modules are correspondingly accommodated in a plurality of the accommodation spaces.

9. The battery system of claim 8, wherein, The second module is provided with a plurality of second modules, a plurality of the second modules are arranged in a horizontal direction, and a plurality of the second modules are correspondingly accommodated in a plurality of the accommodation spaces.

10. The battery system of claim 1, wherein, The battery system further comprises an electrical connector used for electrically connecting a plurality of the battery modules.

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